20604335107 has 2 divisors, whose sum is σ = 20604335108. Its totient is φ = 20604335106.

The previous prime is 20604335057. The next prime is 20604335177. The reversal of 20604335107 is 70153340602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20604335107 - 2⁷ = 20604334979 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604335177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10302167553 + 10302167554.

It is an arithmetic number, because the mean of its divisors is an integer number (10302167554).

Almost surely, 2^20604335107 is an apocalyptic number.

20604335107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604335107 is an equidigital number, since it uses as much as digits as its factorization.

20604335107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 20604335107 its reverse (70153340602), we get a palindrome (90757675709).

The spelling of 20604335107 in words is "twenty billion, six hundred four million, three hundred thirty-five thousand, one hundred seven".